diff --git a/aiozipkin/__init__.py b/aiozipkin/__init__.py
index 1a725227..9e688a3e 100644
--- a/aiozipkin/__init__.py
+++ b/aiozipkin/__init__.py
@@ -5,7 +5,7 @@
 from .tracer import create, Tracer
 
 
-__version__ = '0.0.1a0'
+__version__ = '0.0.1a1'
 __all__ = ('Tracer',
            'Sampler',
            'create',